This is what's Trending Today...
这里是今日热点节目。
People in the western United States could not believe their eyes Wednesday night when, high in the sky, a bright streak of light appeared.
当周三晚上高空中出现一道亮光时，美国西部的人们简直不敢相信自己的眼睛。
Many people took photographs or made videos of the mysterious object in the sky. Within minutes, some posted their videos on social media.
许多人对这一天空中的神秘物体拍照或拍摄视频。几分钟后，有人在社交媒体上发布了他们的视频。
The strange fireball streaks were seen in parts of Nevada, Utah and California.
内华达州、犹他州和加利福尼亚州的部分地区可以看到这道奇怪的火球状亮光。
Some people thought it was a meteor shower. After all, the Delta Aquarids meteor shower can be seen in many areas in the night sky this week.
有人认为这是一场流星雨。毕竟，本周很多地区都能在夜空中观看到宝瓶座流星雨。
But, as the U.S. Strategic Command confirmed, these bursts of light were not from small rocks traveling through outer space.
但是美国战略司令部证实，这些光芒并非来自穿越外太空的小陨石（即流星雨）。
They came from a Chinese rocket re-entering Earth's atmosphere. A spokeswoman for the Strategic Command told the Associated Press that remains of the Chinese Chang-Zheng (C-Z) 7 rocket re-entered the atmosphere at around 9:36 p.m., California time.
这些光芒源于中国火箭重新进入地球大气层。美国战略司令部一位发言人对美联社表示，中国长征7号火箭残骸于加州当地时间晚上9点36分重新进入大气层。
The CZ-7 was part of China's new generation of rockets, experts say. The rocket was launched June 25. It was huge, weighing over 5 tons.
专家表示，长征7号火箭是中国新一代火箭。该火箭于6月25日发射，它非常巨大，重量超过5吨。
One Twitter user commenting about the event Wednesday night was Harvard astronomer Jonathan McDowell. He said it was rare for such large objects to re-enter the atmosphere.
哈佛大学天文学家乔纳森·麦克道尔（Jonathan McDowell）在推特上对这一事件发表了评论。他说，这么大型的物体重新进入大气层非常罕见。
But the CZ-7 is not the biggest object to re-enter in 2016, he noted. Part of a Russian rocket that came down over Vietnam in January was even larger.
但是他指出，长征七号火箭并非2016年重返大气层的最大物体。今年一月份在越南上空坠落的俄罗斯火箭残骸甚至更大。
Experts say the Chinese rocket does not present a danger to people on the ground.
专家表示，该火箭对地面人群不构成威胁。
And that's What's Trending Today.
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